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GdipDrawCurve3I

関数

区間と張力を指定して整数座標の基数スプライン曲線を描画する。

DLLgdiplus.dll呼出規約winapi

シグネチャ

// gdiplus.dll
#include <windows.h>

Status GdipDrawCurve3I(
    GpGraphics* graphics,
    GpPen* pen,
    const Point* points,
    INT count,
    INT offset,
    INT numberOfSegments,
    FLOAT tension
);

パラメーター

名前	型	方向	説明
graphics	GpGraphics*	inout	描画先のGDI+グラフィックスオブジェクトへのポインタ。
pen	GpPen*	inout	曲線の線色や太さを定義するペンオブジェクトへのポインタ。
points	Point*	in	曲線が通過する点群を格納したPoint構造体配列(整数座標)へのポインタ。
count	INT	in	points配列内の点の総数。
offset	INT	in	描画開始点の配列先頭からのオフセット(0起算インデックス)。
numberOfSegments	INT	in	描画する曲線セグメントの数。点数より少ない部分のみ描く。
tension	FLOAT	in	曲線の張力。0.0で直線的、値が大きいほど湾曲が強まる。

戻り値の型: Status

各言語での呼び出し定義

// gdiplus.dll
#include <windows.h>

Status GdipDrawCurve3I(
    GpGraphics* graphics,
    GpPen* pen,
    const Point* points,
    INT count,
    INT offset,
    INT numberOfSegments,
    FLOAT tension
);

[DllImport("gdiplus.dll", ExactSpelling = true)]
static extern int GdipDrawCurve3I(
    IntPtr graphics,   // GpGraphics* in/out
    IntPtr pen,   // GpPen* in/out
    IntPtr points,   // Point*
    int count,   // INT
    int offset,   // INT
    int numberOfSegments,   // INT
    float tension   // FLOAT
);

<DllImport("gdiplus.dll", ExactSpelling:=True)>
Public Shared Function GdipDrawCurve3I(
    graphics As IntPtr,   ' GpGraphics* in/out
    pen As IntPtr,   ' GpPen* in/out
    points As IntPtr,   ' Point*
    count As Integer,   ' INT
    offset As Integer,   ' INT
    numberOfSegments As Integer,   ' INT
    tension As Single   ' FLOAT
) As Integer
End Function

' graphics : GpGraphics* in/out
' pen : GpPen* in/out
' points : Point*
' count : INT
' offset : INT
' numberOfSegments : INT
' tension : FLOAT
Declare PtrSafe Function GdipDrawCurve3I Lib "gdiplus" ( _
    ByVal graphics As LongPtr, _
    ByVal pen As LongPtr, _
    ByVal points As LongPtr, _
    ByVal count As Long, _
    ByVal offset As Long, _
    ByVal numberOfSegments As Long, _
    ByVal tension As Single) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

GdipDrawCurve3I = ctypes.windll.gdiplus.GdipDrawCurve3I
GdipDrawCurve3I.restype = ctypes.c_int
GdipDrawCurve3I.argtypes = [
    ctypes.c_void_p,  # graphics : GpGraphics* in/out
    ctypes.c_void_p,  # pen : GpPen* in/out
    ctypes.c_void_p,  # points : Point*
    ctypes.c_int,  # count : INT
    ctypes.c_int,  # offset : INT
    ctypes.c_int,  # numberOfSegments : INT
    ctypes.c_float,  # tension : FLOAT
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('gdiplus.dll')
GdipDrawCurve3I = Fiddle::Function.new(
  lib['GdipDrawCurve3I'],
  [
    Fiddle::TYPE_VOIDP,  # graphics : GpGraphics* in/out
    Fiddle::TYPE_VOIDP,  # pen : GpPen* in/out
    Fiddle::TYPE_VOIDP,  # points : Point*
    Fiddle::TYPE_INT,  # count : INT
    Fiddle::TYPE_INT,  # offset : INT
    Fiddle::TYPE_INT,  # numberOfSegments : INT
    Fiddle::TYPE_FLOAT,  # tension : FLOAT
  ],
  Fiddle::TYPE_INT)

#[link(name = "gdiplus")]
extern "system" {
    fn GdipDrawCurve3I(
        graphics: *mut GpGraphics,  // GpGraphics* in/out
        pen: *mut GpPen,  // GpPen* in/out
        points: *const Point,  // Point*
        count: i32,  // INT
        offset: i32,  // INT
        numberOfSegments: i32,  // INT
        tension: f32  // FLOAT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("gdiplus.dll")]
public static extern int GdipDrawCurve3I(IntPtr graphics, IntPtr pen, IntPtr points, int count, int offset, int numberOfSegments, float tension);
"@
$api = Add-Type -MemberDefinition $sig -Name 'gdiplus_GdipDrawCurve3I' -Namespace Win32 -PassThru
# $api::GdipDrawCurve3I(graphics, pen, points, count, offset, numberOfSegments, tension)

#uselib "gdiplus.dll"
#func global GdipDrawCurve3I "GdipDrawCurve3I" sptr, sptr, sptr, sptr, sptr, sptr, float
; GdipDrawCurve3I varptr(graphics), varptr(pen), varptr(points), count, offset, numberOfSegments, tension   ; 戻り値は stat
; graphics : GpGraphics* in/out -> "sptr"
; pen : GpPen* in/out -> "sptr"
; points : Point* -> "sptr"
; count : INT -> "sptr"
; offset : INT -> "sptr"
; numberOfSegments : INT -> "sptr"
; tension : FLOAT -> "float"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

出力引数:

#uselib "gdiplus.dll"
#cfunc global GdipDrawCurve3I "GdipDrawCurve3I" var, var, var, int, int, int, float
; res = GdipDrawCurve3I(graphics, pen, points, count, offset, numberOfSegments, tension)
; graphics : GpGraphics* in/out -> "var"
; pen : GpPen* in/out -> "var"
; points : Point* -> "var"
; count : INT -> "int"
; offset : INT -> "int"
; numberOfSegments : INT -> "int"
; tension : FLOAT -> "float"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。#uselib "gdiplus.dll"
#cfunc global GdipDrawCurve3I "GdipDrawCurve3I" sptr, sptr, sptr, int, int, int, float
; res = GdipDrawCurve3I(varptr(graphics), varptr(pen), varptr(points), count, offset, numberOfSegments, tension)
; graphics : GpGraphics* in/out -> "sptr"
; pen : GpPen* in/out -> "sptr"
; points : Point* -> "sptr"
; count : INT -> "int"
; offset : INT -> "int"
; numberOfSegments : INT -> "int"
; tension : FLOAT -> "float"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; Status GdipDrawCurve3I(GpGraphics* graphics, GpPen* pen, Point* points, INT count, INT offset, INT numberOfSegments, FLOAT tension)
#uselib "gdiplus.dll"
#cfunc global GdipDrawCurve3I "GdipDrawCurve3I" var, var, var, int, int, int, float
; res = GdipDrawCurve3I(graphics, pen, points, count, offset, numberOfSegments, tension)
; graphics : GpGraphics* in/out -> "var"
; pen : GpPen* in/out -> "var"
; points : Point* -> "var"
; count : INT -> "int"
; offset : INT -> "int"
; numberOfSegments : INT -> "int"
; tension : FLOAT -> "float"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。; Status GdipDrawCurve3I(GpGraphics* graphics, GpPen* pen, Point* points, INT count, INT offset, INT numberOfSegments, FLOAT tension)
#uselib "gdiplus.dll"
#cfunc global GdipDrawCurve3I "GdipDrawCurve3I" intptr, intptr, intptr, int, int, int, float
; res = GdipDrawCurve3I(varptr(graphics), varptr(pen), varptr(points), count, offset, numberOfSegments, tension)
; graphics : GpGraphics* in/out -> "intptr"
; pen : GpPen* in/out -> "intptr"
; points : Point* -> "intptr"
; count : INT -> "int"
; offset : INT -> "int"
; numberOfSegments : INT -> "int"
; tension : FLOAT -> "float"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"math"
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	gdiplus = windows.NewLazySystemDLL("gdiplus.dll")
	procGdipDrawCurve3I = gdiplus.NewProc("GdipDrawCurve3I")
)

// graphics (GpGraphics* in/out), pen (GpPen* in/out), points (Point*), count (INT), offset (INT), numberOfSegments (INT), tension (FLOAT)
r1, _, err := procGdipDrawCurve3I.Call(
	uintptr(graphics),
	uintptr(pen),
	uintptr(points),
	uintptr(count),
	uintptr(offset),
	uintptr(numberOfSegments),
	uintptr(math.Float32bits(tension)),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // Status
// 注意: float/double 引数は proc.Call では XMM レジスタに渡せません。
// windows.SyscallN(proc.Addr(), math.Float64bits(x), ...) もしくは cgo を使用してください。

function GdipDrawCurve3I(
  graphics: Pointer;   // GpGraphics* in/out
  pen: Pointer;   // GpPen* in/out
  points: Pointer;   // Point*
  count: Integer;   // INT
  offset: Integer;   // INT
  numberOfSegments: Integer;   // INT
  tension: Single   // FLOAT
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipDrawCurve3I';

result := DllCall("gdiplus\GdipDrawCurve3I"
    , "Ptr", graphics   ; GpGraphics* in/out
    , "Ptr", pen   ; GpPen* in/out
    , "Ptr", points   ; Point*
    , "Int", count   ; INT
    , "Int", offset   ; INT
    , "Int", numberOfSegments   ; INT
    , "Float", tension   ; FLOAT
    , "Int")   ; return: Status

●GdipDrawCurve3I(graphics, pen, points, count, offset, numberOfSegments, tension) = DLL("gdiplus.dll", "int GdipDrawCurve3I(void*, void*, void*, int, int, int, float)")
# 呼び出し: GdipDrawCurve3I(graphics, pen, points, count, offset, numberOfSegments, tension)
# graphics : GpGraphics* in/out -> "void*"
# pen : GpPen* in/out -> "void*"
# points : Point* -> "void*"
# count : INT -> "int"
# offset : INT -> "int"
# numberOfSegments : INT -> "int"
# tension : FLOAT -> "float"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。

const std = @import("std");

extern "gdiplus" fn GdipDrawCurve3I(
    graphics: [*c]GpGraphics, // GpGraphics* in/out
    pen: [*c]GpPen, // GpPen* in/out
    points: [*c]Point, // Point*
    count: i32, // INT
    offset: i32, // INT
    numberOfSegments: i32, // INT
    tension: f32 // FLOAT
) callconv(std.os.windows.WINAPI) i32;

proc GdipDrawCurve3I(
    graphics: ptr GpGraphics,  # GpGraphics* in/out
    pen: ptr GpPen,  # GpPen* in/out
    points: ptr Point,  # Point*
    count: int32,  # INT
    offset: int32,  # INT
    numberOfSegments: int32,  # INT
    tension: float32  # FLOAT
): int32 {.importc: "GdipDrawCurve3I", stdcall, dynlib: "gdiplus.dll".}

pragma(lib, "gdiplus");
extern(Windows)
int GdipDrawCurve3I(
    GpGraphics* graphics,   // GpGraphics* in/out
    GpPen* pen,   // GpPen* in/out
    Point* points,   // Point*
    int count,   // INT
    int offset,   // INT
    int numberOfSegments,   // INT
    float tension   // FLOAT
);

ccall((:GdipDrawCurve3I, "gdiplus.dll"), stdcall, Int32,
      (Ptr{GpGraphics}, Ptr{GpPen}, Ptr{Point}, Int32, Int32, Int32, Float32),
      graphics, pen, points, count, offset, numberOfSegments, tension)
# graphics : GpGraphics* in/out -> Ptr{GpGraphics}
# pen : GpPen* in/out -> Ptr{GpPen}
# points : Point* -> Ptr{Point}
# count : INT -> Int32
# offset : INT -> Int32
# numberOfSegments : INT -> Int32
# tension : FLOAT -> Float32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t GdipDrawCurve3I(
    void* graphics,
    void* pen,
    void* points,
    int32_t count,
    int32_t offset,
    int32_t numberOfSegments,
    float tension);
]]
local gdiplus = ffi.load("gdiplus")
-- gdiplus.GdipDrawCurve3I(graphics, pen, points, count, offset, numberOfSegments, tension)
-- graphics : GpGraphics* in/out
-- pen : GpPen* in/out
-- points : Point*
-- count : INT
-- offset : INT
-- numberOfSegments : INT
-- tension : FLOAT
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('gdiplus.dll');
const GdipDrawCurve3I = lib.func('__stdcall', 'GdipDrawCurve3I', 'int32_t', ['void *', 'void *', 'void *', 'int32_t', 'int32_t', 'int32_t', 'float']);
// GdipDrawCurve3I(graphics, pen, points, count, offset, numberOfSegments, tension)
// graphics : GpGraphics* in/out -> 'void *'
// pen : GpPen* in/out -> 'void *'
// points : Point* -> 'void *'
// count : INT -> 'int32_t'
// offset : INT -> 'int32_t'
// numberOfSegments : INT -> 'int32_t'
// tension : FLOAT -> 'float'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("gdiplus.dll", {
  GdipDrawCurve3I: { parameters: ["pointer", "pointer", "pointer", "i32", "i32", "i32", "f32"], result: "i32" },
});
// lib.symbols.GdipDrawCurve3I(graphics, pen, points, count, offset, numberOfSegments, tension)
// graphics : GpGraphics* in/out -> "pointer"
// pen : GpPen* in/out -> "pointer"
// points : Point* -> "pointer"
// count : INT -> "i32"
// offset : INT -> "i32"
// numberOfSegments : INT -> "i32"
// tension : FLOAT -> "f32"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t GdipDrawCurve3I(
    void* graphics,
    void* pen,
    void* points,
    int32_t count,
    int32_t offset,
    int32_t numberOfSegments,
    float tension);
C, "gdiplus.dll");
// $ffi->GdipDrawCurve3I(graphics, pen, points, count, offset, numberOfSegments, tension);
// graphics : GpGraphics* in/out
// pen : GpPen* in/out
// points : Point*
// count : INT
// offset : INT
// numberOfSegments : INT
// tension : FLOAT
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Gdiplus extends StdCallLibrary {
    Gdiplus INSTANCE = Native.load("gdiplus", Gdiplus.class);
    int GdipDrawCurve3I(
        Pointer graphics,   // GpGraphics* in/out
        Pointer pen,   // GpPen* in/out
        Pointer points,   // Point*
        int count,   // INT
        int offset,   // INT
        int numberOfSegments,   // INT
        float tension   // FLOAT
    );
}

@[Link("gdiplus")]
lib Libgdiplus
  fun GdipDrawCurve3I = GdipDrawCurve3I(
    graphics : GpGraphics*,   # GpGraphics* in/out
    pen : GpPen*,   # GpPen* in/out
    points : Point*,   # Point*
    count : Int32,   # INT
    offset : Int32,   # INT
    numberOfSegments : Int32,   # INT
    tension : Float32   # FLOAT
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef GdipDrawCurve3INative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, Int32, Int32, Int32, Float);
typedef GdipDrawCurve3IDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, int, int, int, double);
final GdipDrawCurve3I = DynamicLibrary.open('gdiplus.dll')
    .lookupFunction<GdipDrawCurve3INative, GdipDrawCurve3IDart>('GdipDrawCurve3I');
// graphics : GpGraphics* in/out -> Pointer<Void>
// pen : GpPen* in/out -> Pointer<Void>
// points : Point* -> Pointer<Void>
// count : INT -> Int32
// offset : INT -> Int32
// numberOfSegments : INT -> Int32
// tension : FLOAT -> Float
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GdipDrawCurve3I(
  graphics: Pointer;   // GpGraphics* in/out
  pen: Pointer;   // GpPen* in/out
  points: Pointer;   // Point*
  count: Integer;   // INT
  offset: Integer;   // INT
  numberOfSegments: Integer;   // INT
  tension: Single   // FLOAT
): Integer; stdcall;
  external 'gdiplus.dll' name 'GdipDrawCurve3I';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GdipDrawCurve3I"
  c_GdipDrawCurve3I :: Ptr () -> Ptr () -> Ptr () -> Int32 -> Int32 -> Int32 -> CFloat -> IO Int32
-- graphics : GpGraphics* in/out -> Ptr ()
-- pen : GpPen* in/out -> Ptr ()
-- points : Point* -> Ptr ()
-- count : INT -> Int32
-- offset : INT -> Int32
-- numberOfSegments : INT -> Int32
-- tension : FLOAT -> CFloat
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let gdipdrawcurve3i =
  foreign "GdipDrawCurve3I"
    ((ptr void) @-> (ptr void) @-> (ptr void) @-> int32_t @-> int32_t @-> int32_t @-> float @-> returning int32_t)
(* graphics : GpGraphics* in/out -> (ptr void) *)
(* pen : GpPen* in/out -> (ptr void) *)
(* points : Point* -> (ptr void) *)
(* count : INT -> int32_t *)
(* offset : INT -> int32_t *)
(* numberOfSegments : INT -> int32_t *)
(* tension : FLOAT -> float *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library gdiplus (t "gdiplus.dll"))
(cffi:use-foreign-library gdiplus)

(cffi:defcfun ("GdipDrawCurve3I" gdip-draw-curve3-i :convention :stdcall) :int32
  (graphics :pointer)   ; GpGraphics* in/out
  (pen :pointer)   ; GpPen* in/out
  (points :pointer)   ; Point*
  (count :int32)   ; INT
  (offset :int32)   ; INT
  (number-of-segments :int32)   ; INT
  (tension :float))   ; FLOAT
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GdipDrawCurve3I = Win32::API::More->new('gdiplus',
    'int GdipDrawCurve3I(LPVOID graphics, LPVOID pen, LPVOID points, int count, int offset, int numberOfSegments, float tension)');
# my $ret = $GdipDrawCurve3I->Call($graphics, $pen, $points, $count, $offset, $numberOfSegments, $tension);
# graphics : GpGraphics* in/out -> LPVOID
# pen : GpPen* in/out -> LPVOID
# points : Point* -> LPVOID
# count : INT -> int
# offset : INT -> int
# numberOfSegments : INT -> int
# tension : FLOAT -> float
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

GdipDrawCurve3I

シグネチャ

パラメーター

各言語での呼び出し定義

関連項目